Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
No functional change intended.
suggestions which result in the last revision[*]:
- style(9) and sysexits(3) suggests that we use EX_*
as exit values, instead of some other values like
those returned from a system call as errno.
Additionally, follow Ruslan's suggestion about style(9) and
other style improvements:
- Since open(2) says that it returns -1 on errors,
explicitly determine whether it is returning -1
rather than whether the return value is less than
zero.
- Only set rval when there is no previous error.
This distinguishes the first error that occours.
- Use exit() in favor of return in main(), this is
suggested in old style(9), while the evolve has
fade the suggestion.
- Add some NOTREACHED comments.
- Add blank line after first { because no local variables
in usage()
Thanks to Ruslan for his tireless explaining of the code standards
and knowledge of the history of style(9).
[*] Pointy hat to: me
Submitted by: ru (with some minor changes)
Discussed with: ru, ssouhlal
